List of avg() Examples

Examples of avg()

com.jengine.orm.model.cluster.Cluster.avg()
javax.persistence.criteria.CriteriaBuilder.avg()
Create an aggregate expression applying the avg operation. @param x expression representing input value to avg operation @return avg expression
org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()
This is the client side interface/handle for calling the average method for a given cf-cq combination. It was necessary to add one more call stack as its return type should be a decimal value, irrespective of what columninterpreter says. So, this methods collects the necessary parameters to compute the average and returs the double value. @param tableName @param ci @param scan @return @throws Throwable

Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
    scan.setFilter(f);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    Double avg = null;
    avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(Double.NaN, avg, 0);
  }


  /**
   * ****************** Test cases for STD **********************

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Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(9.5, avg, 0);
  }


  /**
   * @throws Throwable

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Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    scan.setStartRow(ROWS[5]);
    scan.setStopRow(ROWS[15]);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci =
        new DoubleColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(9.5, avg, 0);
  }


  @Test(timeout = 300000)
  public void testAvgWithValidRangeWithNoCQ() throws Throwable {

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Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addFamily(TEST_FAMILY);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(10.45, avg, 0.01);
  }


  @Test(timeout = 300000)
  public void testAvgWithValidRange2WithNoCQ() throws Throwable {

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Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    scan.addFamily(TEST_FAMILY);
    scan.setStartRow(ROWS[6]);
    scan.setStopRow(ROWS[7]);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(6 + 0.60, avg, 0);
  }


  @Test(timeout = 300000)
  public void testAvgWithValidRangeWithNullCF() {

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Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    final ColumnInterpreter<BigDecimal, BigDecimal, EmptyMsg, BigDecimalMsg, BigDecimalMsg> ci =
      new BigDecimalColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(9.5, avg, 0);
  }


  /**
   * @throws Throwable

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Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    scan.setStartRow(ROWS[5]);
    scan.setStopRow(ROWS[15]);
    final ColumnInterpreter<BigDecimal, BigDecimal, EmptyMsg, BigDecimalMsg, BigDecimalMsg> ci =
      new BigDecimalColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(9.5, avg, 0);
  }


  @Test (timeout=300000)
  public void testAvgWithValidRangeWithNoCQ() throws Throwable {

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Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addFamily(TEST_FAMILY);
    final ColumnInterpreter<BigDecimal, BigDecimal, EmptyMsg, BigDecimalMsg, BigDecimalMsg> ci =
      new BigDecimalColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(10.45, avg, 0.01);
  }


  @Test (timeout=300000)
  public void testAvgWithValidRange2WithNoCQ() throws Throwable {

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Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    scan.addFamily(TEST_FAMILY);
    scan.setStartRow(ROWS[6]);
    scan.setStopRow(ROWS[7]);
    final ColumnInterpreter<BigDecimal, BigDecimal, EmptyMsg, BigDecimalMsg, BigDecimalMsg> ci =
      new BigDecimalColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(6 + 0.60, avg, 0);
  }


  @Test (timeout=300000)
  public void testAvgWithValidRangeWithNullCF() {

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Examples of org.apache.hadoop.hbase.client.coprocessor.AggregationClient.avg()

    Scan scan = new Scan();
    final ColumnInterpreter<BigDecimal, BigDecimal, EmptyMsg, BigDecimalMsg, BigDecimalMsg> ci =
      new BigDecimalColumnInterpreter();
    Double avg = null;
    try {
      avg = aClient.avg(TEST_TABLE, ci, scan);
    } catch (Throwable e) {
    }
    assertEquals(null, avg);// CP will throw an IOException about the
    // null column family, and max will be set to 0
  }

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